Typewriting machine



July 8. 1924. 1,500,190

. w. F. H ELMOND TYPEWRITING' MACHINE Filed March 16, 1 922 v lave/2 for} VIZ/J 9 /44,

Patented July 8, 1924. i

j Farm for FIIC WILLIAM F. HELMOND, or HART ORD, 'oonnno'rrour, Ass e'NoR ToUNDERwoon rYrEwnrrERooMrANY, o'r-r'mw YORK, N. Y., A CORPORATION or DELAWARE.

'rYrnWRI'rII Ie MACHINE,

Application filed March is, 192a Ser ialNo. 544,168. 7 I

To all whom it may concern:

Be it known that I, WILLIAM F. Hum/1on1), a citizen of the United States,'residing 'in Hartford, in the county. of Hartford and State of Connecticut, have invented certain new and useful Improvements inTypewriting Machines, of which the following is specification. 2; 1

The present invention relates'topaper ing line by means of the rolls carried there by; such fingers being usually-adjustable lengthwise of the platen according to the width of the paper,'card orenvelope .tobe held thereby. I v I a For easy insertion and' feed of the paper, the rolls should have considerable Fre siliency; and, by having the sheet-metalof the finger 's light enough, such,delicacy of action of the rolls may temporarily be obtained. r If, however, the fingers.- are: made thin enough to provide such resiliency, they are easily bent anddistortech with :the ,result that the rolls may bear. unequally, unevenly, or'notat all, on the paper If, on the other hand, fingers whichthus directly carry therolls befmade' heavy enough to stand wear and tear withoutinjury, then the rolls may' lack the' vdesired'delicacyof action. j w

- A feature ofithe present invention vis the provisionof means whereby. therollsmay have a play to and -from'the platenin dep endr ently of, or with respect to, the fingers; so that-the rolls may havethe desiredfresiliency and certainty of action regardless of stiffness, or-even of injury, of'thefingers; *and'vice versa, so thatithefingers maybe of any. required strength without regard to :the resiliency required by 'therollsr In "attaining the above-mentioned object, in 'the preferred 'form'ofthe inventiomthe r0115; instead of having their bearings directly on fingers of delicate spring sheet- Inetal; are supported on Tspring metal plates of the f required lightness and resiliency,

platen. V

,Another feature of the invention is the provision of; means for quickly, accurately, and detachably securing. the roll-carrying plate to the finger, and for securing both of these partsto their supporting bracketrnot" only for purposes of assembly, but so that an injured. or worn finger or roll may be re placed without discarding theiother of such parts. A

A further feature o f the invention is a construction ofpaper-fing'er-supporting bracket such that the bracket, though made of comparatively'light sheet-metal,

will not, bending, bind on its rail. when pressure is applied to lengthwise of the platen.

. Other features andadvantages here 1 inafter" appear.

'In theaccomp-anying drawings, 7

Figure 1 is fa view, in side elevation, cross-sectional through the platen on the line 1' 1 of Figure 2, of the platen-frame and paper-finger mounted thereon, and cer-' tain associated parts. i i

Figure2 is a front viewo-f shown in Figure r sFigure 3' is a detail view,iin perspective, of the bracket which carries the paperfinger, and of a part of the rod on" which the bracket slides.

Figure 4; is 'a view, in perspective, of the slide the sage plates in turn are superimposed on stlifer sheet-metal fingers having openings; thereln through which the rolls'engage the the assembly paper-finger the feed roll being J disconnected therefrom. j

-Figure 5;isia perspective view. of the feedroll of the paper-finger, and of the device for supporting the same on ,the paperfinger. -Referring to the drawings, the platenframeconsists of side pieces 10, one only of which is shown, connected by. rods 11 and 12,. and having revo lubly mounted thereon a platen The usual lower rear and front feed-rolls l l. and 15, respectively, are indicated indotted'lines in Figure 1. 'Aslinv -dicated-by the type-bar16, shown in dotted :lines in igure 1, theimachi'ne is a front strike machine. I In fact, the mechanis m thus fa l" described is. that found on the' Underd.st nde !W19emf t i1s whine The paper-fingers, only one of which is shown in the drawings, are carried by arms or brackets 17, supported on the rod 11. In Figure 1, the bracket 17 is shown in the position in which it holds the paper-finger in operative, paper-engaging position. The paper-fingers are, however, adapted to be thrown upward, and away from the platen, to an inoperative position, and, for this purpose, the arms or brackets 17 are pivotally connected to the rod 11. For holding the brackets 17 in effective position, therod 11 is splined at 18, and a lateral shelf or extension 19 carries a leaf-spring 19 which, in turn, carries a key, indicated at 20 in Figure 1, for engagement with the spline in the rod 11. When the bracket is turned to the Figure 1 position, the key 20 registers with the spline 18, and the leaf-spring19f causes the key to. enter the spline andlock' the bracket in its normal position. the arm or bracket 17 is" thrown up, to remove the paper-fingers from the platen, the leaf-spring,referred to, permits the key 20 to be forced out of the spline-way 18, but causes the key thereafter to bear upon the rod 11 in such manner as'to hold the bracket in upper position" against accidental displacement, For throwing the bracket up and down with the paper-finger, the bracket has at its forward end a finger-piece 21. The connections of the bracket 17 to the rod 11, just described, are those found on the Underwood standard typewriting machine, and so are not more specifically illustrated. v

Asa part of the present invention, however, the bracket-arms 17 have offset ribs or flanges 22. 23 thereon, which are continued around to form offsets or flanges on the proximate ends of the shelf-portions 19; thus re-enforcing the arms 17 against lateral spring and making their connections to the shelf-portions 19 more rigid. This rigidity of the bracket as a whole and the eliminationof spring in the arm 17 is highly desirable, because the brackets are to he slid with the paper-fingers to any desired marginal position on the rod 11; and, if the arms 17 are readily sprung laterally, they" will bind upon the rod 11 and interfere with prompt and easy longitudinal adjustment of the paper-fingers on the rod 11.

i For supporting, the paper-finger on the bracket, the latter, at its forward end, has a laterally-offset armor plate 24,;provided with screw-holes 25. The paper-'finger'26'is curved in general conformity to the curvature of the platen, b'ut,atits upper'en'd, has a flat offset portion 27 whichis adapted to be set againstthe back of the bracket-plate 24, and, at itsupper'end, is curved forward at28, to overliethe top edge of thebr'acketplate 24. The paperfinger also has two screw-holes" 29 adapted to register with the screw-holes 25 in the plate 24. The paperfinger is held to the bracket-plate 24 by means of screws 30 (see Figure 1), which pass through the screw-holes 29 in the paperfinger and through the screw-holes 25 in the plate 24, and which thread into a block or plate 31 behind the paper-finger.

As shown in Figure 4, the paper-finger hasa transverse opening 32 therein, through which the roll 33 may engage the platen or the paper thereon. Ears 34 in the paper finger connect and unify the parts of the paper-fingerforward and rearward of the opening 32 therein. have its bearings directly in the paper-finger, but is carried by apin 35' which bears in" ears 36, struck upward from and forming part of a thin, resilient piece of sheet-metal 137 The roll-carrying piece or arm 37 is offset at 38, at its upper end, and in the offset 38' are screw-holes 39 of the same size and sp'acing'as the screwholes 29 in the fingerpiece- 26'. As shown in- Figure 1, the roll f supporting arm 37 is set on=the finger-piece 26 in such mannerthat the roll and-itssup-" portingjears 36 lie between the" ears 340i the The roll 33 does not paper-finger, with the roll itself in' registra tio'n with the opening '32 through the-paperfinger. When in this position, the screwholes 39 register with the screw holes'29,'-so; that, as shown in Figure 1, the screws 30 which hold the paper-finger'to the bracket 17 also hold the rOIl carrying' arm 37 in place; It will be noted that the offset 3801? the rollcarrying arm lies betweenthepaper-finger and thebracket-plate 24 when the parts are assembled.

As shown in the drawings, the paper finger 26 is of heavier or thicker sheetmaterial than the roll-carryingarm 37. The thickness of the roll carr'ying arm 37 and the spring set of the same is such as toresult in a delicate spring action oftheroll on the platen or' paperywhereas the thicker stock of the finger 26 gives" the latter all the strength and rigidi'ty'which it's s'everal functions require.

It will be noted that, since the roll carrying. piece 37 is separable fromthe finger-piece 26', an injured finger pi'ece or a Worn 0 1" twisted r'o11er'may' be removed and another substituted thererer without discarding the uninjured partl- It"wil1-alsb be seen that the oilset 28"011' the finger pie c'e may serve as" a means foreffecting. a" preliminary and approximately correct positioning of the roll-bearing plate on the finger piec'e and that, with these parts thus positioned, one on the other, theofi'set 28 on the finger pie'ce is hooked over the bracketarm" 24} and serves I as a means for approx?- ima'tely" positioning the parts on-the brac'ket for insertion ofthe' screws.

Variations may be resorted to within the scope of the invention,v and portions of the improvements may be used without others.

Having thus described my invention, I claim:

1. In a typewriting machine, a revoluble platen, a relatively stiff sheet-metal finger for liding the paper around the platen, a relatively resilient sheet-metal plate, a paper-holding roll carried by said plate for yieldable engagement with the platen independently of the finger, and a bracket on which the finger and roll-holding plate are held, the plate on top of the finger, with the roll engageable with the platen through an opening in the finger.

2. In a typewriting machine, a revoluble platen, a relatively stifl' sheet-metal finger for guiding the paper around the platen, a relatively resilient sheet-metal plate, a paper-holding roll carried by said plate for yieldable engagement with the platen independently of the finger, and a bracket on which the finger and roll-holding plate are held, by one end of each. I

3. In a typewriting machine, a revoluble platen, a finger for guiding and holding the paper on the platen, a sheet-metal bracket for supporting the paper-finger, and a rod along which the bracketis adjustable lengthwise of the platen; the bracket comprising an arm extending lengthwise of the rod with ears or lugs spaced apart thereon for engagement with the rod, and an arm pro jecting at an angle therefrom, for sliding the bracket, the edges of the bracket being ofiset across the Junction of said arms thereof to stiifen the same against any angular movement which would tend to cause the bracket to bind on the rod.

4. In a typewriting machine, a revoluble platen, a relatively stifi long finger for guiding the paper around the platen, and a relatively resilient short plate having one end detachably connected to one end of the finger, and having a paper-holding roll mounted on the free end thereof; said plate and roll normally positioned to yieldingly hold the paper to the platen independently of the finger.

5. In a mounting for a paper-guiding finger for a revoluble platen, the combination of a bracket for supporting the finger, and a rod extending lengthwise of the platen, along which the bracket'is slidable;

said bracket comprising a member extending lengthwise of the rod, lugs spaced apart thereon, and an arm, a portion of which forms one of said lugs, projecting at an angle from said member; the edges of the bracket adjoining the angular junction of said member and said arm being bent to form continuous flanges to stiffen the same against lateral spring, to prevent the bracket from binding upon the rod when pressure is applied to said arm to slide the bracket along the rod.

WILLIAM F. HELMOND. l/Vitnesses:

EDWIN A. JOHNSON, WILLIAM P. SMITH. 

